A 9mm stone would need removal as it is unlikely to pass spontaneously. Ureteroscopy and LASER lithotripsy is the procedure of choice.

9 mm calculus in rt. Lower ureter is big enough . Get urine examination routine and microscopic to denote associated infection along with a functional study like IVP or CT Urography to ascertain the degree of blockage in the ureter along with functional derangement in the affected kidney.good minimally invasive techniques are available nowadays to remove stone without big incisions.